Mercer Island Assessment Appraisals: Notice and Historical Value

A Mercer Island assessed-value dispute concerns the identified property and assessment date. Use King County’s petition process and a suitably scoped report.

Correct the location before choosing evidence

This guide concerns a Mercer Island residence, not Shoreline. Identify the actual address and parcel. The requested effective date and property characteristics drive the report, rather than a city name inserted into generic text.

Avoid a current-value mismatch

A present-sale opinion may not address an earlier assessment. Provide the notice and explain changes since its relevant date. Inspection timing and report delivery are distinct from the date of the value conclusion.

Do not wait for an appraisal to check filing

Read the Board instructions and any notice-specific deadline promptly. An informal assessor protest is not the same as filing a petition. The engagement does not guarantee fairness, a reduction or comprehensive handling of the appeal.

Which date and authority apply?

The report must address the assessment’s relevant valuation date, which can differ from the inspection and report dates. The county’s appeal authority decides the petition. An informal record inquiry, private appraisal and formal petition serve different functions; check the official requirements for your notice.

What outcome can be promised?

An independent appraisal supplies a supported residential value opinion. It does not set tax rates, award exemptions or guarantee a changed assessment or lower bill. Ask the county about filing requirements and the appropriate adviser about legal or tax questions.

What should accompany a quote request?

Send the property address, purpose, requested effective date, intended users, deadline and access contact. Describe the assessment notice, parcel and disputed property facts. Mention acreage, accessory units, multiple parcels or unusual features so scope, fee and availability can be confirmed.

Official reference: Property or assignment reference · Property or assignment reference.

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Call 425-753-1971 or email dustin.labrasseur@gmail.com.

Revised October 8, 2026.